11.   Although this is a tenth of the cost of triple therapy, it is still a daunting sum for Botswana.

12.   Again, triple therapy proved superior in the study in keeping HIV suppressed.

13.   But one major reason that only Brazil offers free triple therapy is that, until now, there was no Brazil to show that it is possible.

14.   Emery noted that the successful trials of triple therapy involved patients who had relatively healthy immune systems when they started treatment.

15.   In the developing world, Brazil is the only nation that provides free triple therapy to its people.

16.   One group continued on the triple therapy.

17.   Pharmaceutical manufacturers argue that many countries are very far from able to administer a program of triple therapy, and they are right.

18.   Then one-third of the group stayed on triple therapy.

19.   Attempts at starting patients out on the standard triple therapy, then cutting back to two drugs, have not worked.

20.   But he pointed out that the longest clinical trials with the new triple therapies have lasted only two years and that there remain questions about resistance to them.